摘要
研究了雾化沉积制备过共晶Al－Si－X合金过程中，气／液比对沉积坯中初晶硅相尺寸的影响，观察了随热挤压前预热温度的升高，沉积坯中初晶硅相的长大情况．并通过相同温度不同挤压比下挤压组织的比较，讨论了热挤压时挤压比对过共晶Al－Si合金中初晶硅相细化过程的影响，提出细化材料组织的最佳工艺参数．
The influence of preheat temperature to the size of primary Si phrase of hypereutectic Al-Si X alloy produced by Spray-forming is concerned, the materials' microstrucature which extruded under the same temperature but different extrusion ratio are compared. The various effect of atomizing gas to melting metal and extrusion ratio to the primary Si phrase are discussed and the possible reasons which might cause microcracks are analyzed.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
1999年第5期465-467,471,共4页
Journal of University of Science and Technology Beijing
基金
国家"863"高科技项目!715-009-0031
